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Finding the Fourth Proportional to 110,915.70, 153,120.10 and 68,498.84

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Solution

The fourth proportional to 110,915.70, 153,120.10 and 68,498.84 is: 94,563.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,915.70 : 153,120.10 = 68,498.84 : x
  2. Step 2: Convert to fraction form
    110,915.70/153,120.10 = 68,498.84/x
  3. Step 3: Cross multiply
    110,915.70x = 153,120.10 × 68,498.84
  4. Step 4: Simplify right side
    110,915.70x = 10,488,549,230.68
  5. Step 5: Solve for x
    x = 10,488,549,230.68/110,915.70
  6. Step 6: Final answer
    x = 94,563.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.